RTC & Watchdog
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BQ4847YTexas Instruments   RTC W NVSRAM Control, Watchdog Timer, uP Reset, Interrupts and Battery Low Warning 
BQ4850YTexas Instruments   RTC Module With 512Kx8 NVSRAM 
BQ4852YTexas Instruments   RTC Module With 512Kx8 NVSRAM, Watchdog Timer, uP Reset, Interrupts and Battery Low Warning 
DP8573ANational Semiconductor   Real Time Clock (RTC) 
DS1284Maxim   Watchdog Timekeeper Chip 
DS1286Maxim   Watchdog Timekeeper 
DS12885Maxim   Real-Time Clock 
DS12887Maxim   Real-Time Clock 
DS12887AMaxim   Real-Time Clock 
DS12C887Maxim   Real-Time Clock 
DS12C887AMaxim   Real-Time Clock 
DS1302Maxim   Trickle-Charge Timekeeping Chip 
DS1305Maxim   Serial Alarm Real-Time Clock 
DS1306Maxim   Serial Alarm Real-Time Clock (RTC) 
DS1307Maxim   64 x 8, Serial, I2C Real-Time Clock 
DS1315Maxim   Phantom Time Chip 
DS1337Maxim   Serial Real-Time Clock 
DS1338Maxim   2-Wire RTC with 56-Byte NV SRAM 
DS1339Maxim   Serial Real-Time Clock 
DS1340Maxim   I2C RTC with Trickle Charger 
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